Abstract
The levels of aromatic amino acids and amines in the hemolymph of larvae of the common armyworm, My thimna separata, were analyzed after parasitization by the braconid wasp, Apanteles kariyai. Methyldopa, homovanillic acid, tryptophan and tyrosine remained unchanged in unparasitized and parasitized larvae. Dopamine and DOPA showed characteristic changes at pupation that were associated with the hardening and darkening of the cuticle; Dopamine in the hemolymph of unparasitized last instar larvae increased before pupation. Large increases in kynurenine and octopamine were detected in parasitized larvae. The increased level of octopamine in the hemolymph may be stress related.
© 1946 – 2014: Verlag der Zeitschrift für Naturforschung
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